2456 Bulletin //, United States National Museum. 



LYCODIN^: : 

 a. Ventral fins present. 



b. Vomer without teeth ; body scaly. 

 c. Palatines without teeth. 



d. Body very slender, the depth 12 to 16 times in length; lateral line 



short and faint, ventral in position. EMBRYX, 932. 



dd. Body rather robust, the depth 8 to 9 in length; lateral line rather 



faint, lateral in position. LYCODOPSIS, 933. 



cc. Palatines with teeth; lateral line distinct, running along middle of side. 



APRODON, 934. 



bb. Vomer and palatines with teeth. 

 e. Lower jaw without barbels. 



/. Dorsal fin without sculptured scutes at base. 



g. Body rather deep, the depth 6 to 8 times in the length. 



h. Body more or less scaly. LYCODES, 935. 



hh. Body entirely naked, or with a few scales on tail only; 



none on body or fins. LYCODALEPIS, 936. 



gg. Body more slender, the depth 12 to 20 in the length; lateral 



line lateral in position. 



i. Pectoral fin with rounded outlines, the lower rays not 

 greatly produced. LYCENCHELYS, 937. 



it. Pectoral fin deeply notched, the lower rays much pro- 

 duced ; lateral line ventral in position. 



FURCIMANL'S, 938. 



ff. Dorsal fin with the rays each provided with a sculptured scute or 

 appendage at base ; no lateral line ; body elongate. 



LYCODONUS, 939. 



ee. Lower jaw with many barbels: body slender, scaly. LYCONEMA, 940. 

 oa. Ventral fins entirely wanting. 

 GYMNELIN.E: 

 j. Teeth moderate, nearly uniform, on jaws, vomer, and palatines. 



k. Body scaly ; vomer and palatines with teeth ; body compressed, not very 

 slender; skull cavernous. BOTHROCARA, 941. 



kk. Body scaleless. 



I. Lower jaw not very prominent; body very slender; gill openings 



very narrow. GYMNELIS, 942. 



II. Lower jaw very prominent; body slender, tapering behind; scales 



undescribed. LYCOCAKA, 943. 



MELANOSTIOMATIN^: : 



jj. Teeth long, unequal, on jaws, vomer, and palatines ; skin lax; gill openings 

 reduced to a small foramen ; body very slender ; scales obsolete. 



MELANOSTIOMA, 944. 



931. ZOARCES, Gill. 



(EEL-POUTS.) 



Enchelyopus, KLEIN, Ichthyologia Missus, iv, 52, 1747 ; not as restricted by BLOCK & 



SCHNEIDER. 



Zoarces, CUVIBR, Regne Animal, Ed. 2, n, 240, 1829 (viviparus). 

 Zoarchus, SWAINSON, Nat. Hist. Class'n Fishes, n, 283, 1839 (viviparus). 

 Enchelyopus, GILL, Proc. Ac. Nat. Sci. Phila. 1863, 258 (viviparus); not of BLOCK & 



SCHNEIDER. 

 Macrozoarces, GILL, Proc. Ac. Nat. Sci. Phila. 1863, 258 (anguillaris) . 



Body elongate, compressed, tapering posteriorly ; head oblong, heavy, 

 narrowed above, the profile deeurved; mouth large; teeth strong, conic, 

 bluntish, in 2 series in the front of each jaw and 1 series on the sides; 



